Re: Overhauling GUCS

Robert Lor wrote:
> Robert Treat wrote:
> > On Wednesday 04 June 2008 22:04:54 Greg Smith wrote:
> >
> >> I was just talking to someone today about building a monitoring tool for
> >> this. Not having a clear way to recommend people monitor use of work_mem
> >> and its brother spilled to disk sorts is an issue right now, I'll whack
> >> that one myself if someone doesn't beat me to it before I get time.
> >>
> >
> > I remember *years* ago, someone wrote a perl script to poll pgsql_tmp and
> > print out anytime something showed up... you could probably find that in the
> > archives if you look around.
> >
> > of course to me this sounds like an excellent idea for a dtrace probe ;-)
> >
> >
>
> Actually, you can find out from the sort-end probe now whether or not
> the sort spilled to disk and number of disk blocks used. This is one of
> the probes from Simon.
>
> TRACE_POSTGRESQL_SORT_END(state->tapeset,
> (state->tapeset ?
> LogicalTapeSetBlocks(state->tapeset) :
> (state->allowedMem - state->availMem + 1023) /
> 1024));

8.3 has GUC log_temp_files.

--
Bruce Momjian <bruce(at)momjian(dot)us> http://momjian.us
EnterpriseDB http://enterprisedb.com

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